How do you solve the wrong NPM installation of CNPM?

My system is the 64 edition of win10 professional edition. The installation of cnpm under the administrator mode CMD has the following error:

npm ERR! Unexpected end of input at 1:2568
npm ERR! a5dedeaa","size":34335,"noattachment":false,"tarball":"http://registr
npm ERR! ^
npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\Cooper\AppData\Roaming\npm-cache\_logs\2017-08-29T04_00_02_751Z-debug.log